package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.dto.OrdersDto;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.mapper.OrdersMapper;
import com.itheima.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    ShoppingCartService shoppingCartService;

    @Autowired
    UserService userService;

    @Autowired
    AddressBookService addressBookService;

    @Autowired
    OrderDetailService orderDetailService;

    @Override
    public void submit(Orders orders) {
        //获取当前用户id
        Long userId = BaseContext.getCurrentId();

        //查询购物车信息
        LambdaQueryWrapper<ShoppingCart> sqw = new LambdaQueryWrapper<>();
        sqw.eq(ShoppingCart::getUserId, userId);
        List<ShoppingCart> shoppingCartList = shoppingCartService.list(sqw);
        //购物车为空,不能下单
        if (shoppingCartList == null || shoppingCartList.size() == 0) {
            throw new CustomException("购物车为空,不能下单");
        }

        //查询用户数据
        User user = userService.getById(userId);

        //根据地址id查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook == null) {
            throw new CustomException("用户地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();//订单id
        AtomicInteger amount = new AtomicInteger(0);

        //保存订单明细
        List<OrderDetail> orderDetailList = shoppingCartList.stream().map((one) -> {
                    OrderDetail orderDetail = new OrderDetail();

                    orderDetail.setOrderId(orderId);
                    orderDetail.setNumber(one.getNumber());
                    orderDetail.setDishFlavor(one.getDishFlavor());
                    orderDetail.setDishId(one.getDishId());
                    orderDetail.setSetmealId(one.getSetmealId());
                    orderDetail.setName(one.getName());
                    orderDetail.setImage(one.getImage());
                    orderDetail.setAmount(one.getAmount());

                    amount.addAndGet(one.getAmount().multiply(new BigDecimal(one.getNumber())).intValue());

                    return orderDetail;
                }
        ).collect(Collectors.toList());

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetailList);

        //保存订单数据
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));

        //向订单表插入数据，一条数据
        this.save(orders);

        //清空购物车数据
        shoppingCartService.remove(sqw);
    }


    //对orderDto进行处理
    @Override
    public void manage(OrdersDto ordersDto) {

        LambdaQueryWrapper<OrderDetail> qw=new LambdaQueryWrapper<>();
        qw.eq(OrderDetail::getOrderId,ordersDto.getId());
        List<OrderDetail> list = orderDetailService.list(qw);
        ordersDto.setOrderDetails(list);
    }
}
